io.micronaut.http.netty.content.HttpContentUtil Maven / Gradle / Ivy
/*
* Copyright 2017-2020 original authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.micronaut.http.netty.content;
import io.micronaut.core.annotation.Internal;
import io.netty.buffer.CompositeByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.handler.codec.http.DefaultHttpContent;
import io.netty.handler.codec.http.HttpContent;
import java.nio.charset.StandardCharsets;
/**
* Utility methods for generated HTTP content.
*
* @author graemerocher
* @since 1.0
*/
@Internal
public class HttpContentUtil {
public static final byte[] OPEN_BRACKET = "[".getBytes(StandardCharsets.UTF_8);
public static final byte[] CLOSE_BRACKET = "]".getBytes(StandardCharsets.UTF_8);
public static final byte[] COMMA = ",".getBytes(StandardCharsets.UTF_8);
/**
* @return Produces HTTP content for {@code ]}
*/
public static HttpContent closeBracket() {
return new DefaultHttpContent(Unpooled.wrappedBuffer(CLOSE_BRACKET));
}
/**
* @param httpContent The http content to prefix
* @return Produces HTTP content for {@code ]}
*/
public static HttpContent prefixComma(HttpContent httpContent) {
CompositeByteBuf compositeByteBuf = Unpooled.compositeBuffer(2);
compositeByteBuf.addComponent(true, Unpooled.wrappedBuffer(COMMA));
compositeByteBuf.addComponent(true, httpContent.content());
return httpContent.replace(
compositeByteBuf
);
}
/**
* @param httpContent The http content to prefix
* @return Produces HTTP content prefixed by an open bracket
*/
public static HttpContent prefixOpenBracket(HttpContent httpContent) {
CompositeByteBuf compositeByteBuf = Unpooled.compositeBuffer(2);
compositeByteBuf.addComponent(true, Unpooled.wrappedBuffer(OPEN_BRACKET));
compositeByteBuf.addComponent(true, httpContent.content());
return httpContent.replace(compositeByteBuf);
}
}